Installation Guide

ManualsBrandsKnauf Insulation ManualsBuilding materialsR-15 Kraft Faced Fiberglass Insulation Batt 15 in. W x 93 in. L

Stapling Flange

Metal Frame

• Install insulation with speciﬁed R-Value. If the R-Value is not speciﬁed,

measure the depth of the metal stud and select the product with the

highest R-Value that completely ﬁlls the cavity. Determine the width of

insulation needed (usually 16" or 24") by measuring the typical distance

between metal framing.

• Install EcoBatt kraft, foil or FSK-foil batts between framing members with

facing toward the conditioned space.

Note: Friction-ﬁt one side of the batt into the metal C-channel and butt

the other edge against the metal stud.

Note: In warm climates where high humidity prevails, faced products

may be installed toward the exterior of the structure and away from the

air- conditioned space in accordance with local codes and practices.

• Install insulation to cover the full height of the wall including spandrel

areas. Use unfaced insulation or FSK-foil faced insulation in areas,

which will not be directly covered by an approved ﬁnish material (i.e.

gypsum board).

• Attention to detail is very important. Seal all penetrations in exterior

walls with insulation caulk or foam sealants.

KNEE WALLS

Knee walls that separate vented or unconditioned attic space from

conditioned living space are to be treated as exterior walls with the

addition of installing an air barrier using rigid material (drywall, plywood,

Oriented Strand Board or rigid insulation) on the attic side of the knee

wall. The entire knee wall must be air sealed, insulated and sheathed on

both sides of the wall.

BASEMENT WALLS

Install furring strips or framing that will accommodate the thickness of

insulation you are installing.

• Install EcoBatt kraft or unfaced batt insulation between framing

members. Apply kraft-faced insulation with kraft facing toward the inside

of the home.

• If desired, the ﬂanges of faced products may be stapled to the face or

inset stapled on the framing.

• Friction-ﬁt unfaced insulation between framing.

• For totally above grade walls, insulate per the instructions provided

above for Exterior Walls.

• For partially or totally below grade walls, no vapor retarder is required.

Therefore, unfaced batts should be used.

• Cover either application with an approved ﬁnish material (i.e. gypsum

board).

BAND JOISTS/RIM JOISTS

Band and rim joists are essentially short exterior walls. These shall be

treated the same as any exterior wall assembly. Band and Rim joists must

be air sealed, insulated and require an air barrier. If the band or rim joists

are in an enclosed ﬂoor system, i.e. a ﬂoor assembly that is fully enclosed

such as a second ﬂoor that separates the ﬁrst and second conditioned

spaces, air sealing is essential though an air barrier is not necessary. All

unenclosed ﬂoor systems require and air barrier, i.e. an unﬁnished ﬂoor

assembly over a crawl space or an unconditioned, unﬁnished basement.

EcoBatt Insulation Installation Guide

Seal electrical

boxes & other

penetrations

Solid Air Block

(Sealed)

Sealant (Typical)

Ceiling Insulation

Code required

minimum air space

Attic Rigid

Air Barrier

(Sealed)

Vent

Screen

Rafter Insulation

Top Plate (Sealed)

Insulation Block

Interior Dry Wall

Air Barrier Sealed

To Framing

Sill Plate

Floor Joist

Exterior wall above

Floor sheathing

Kraft-faced

EcoBatt

Rim/Band

Joist

Foundation

Sealant

Sill seal